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Cold War
Diplomatic, Informational, Military and Economic
The British intercepted the Zimmerman Telegram while monitoring German diplomatic messages, and revealed it to the US.
Isreal, American support is a big reason it still exists.
China
The US switched diplomatic recognition from Taiwan to China in 1979 following the Joint Communiqué on the Establishment of Diplomatic Relations. This move was part of the US government's effort to recognize the People's Republic of China as the sole legal government of China.
During the Korean War (1950-1953), the United States only recognized Taiwan (Nationalist China), and Nationalist China was considered an ally to the US.
1978
after the Arabic-sussex pledge was broken and Germany continued to destroy the American ships, Wilson had decided that all diplomatic ties with Germany would be broken
The People's Republic of China was recognized by the US on January 1, 1979 as the sole legal government of China. The recognition established the diplomatic relations of the two countries. This was an accomplishment of President Jimmy Carter.
During the open door policy.
Germany and Britain
Yes. The U.S senate president pro can temporarily break senate ties when the U.S vice presidency is vacant.
The President of the Senate (VP of US) votes to break ties.
Nixon was able to normalize diplomatic and trade relations with China. Congress alone has the power to borrow money and they usually do it by authorizing an issue of treasury bonds. After diplomatic relations were restored with China, the Chinese were able to buy US treasury bonds as they wished.
They said that they would destroy all ships going into Great Britain.
Richard Nixon was the president that restored diplomatic relations with China.